C#仿QQ皮肤－Button 控件实现

  原文地址：http://www.sufeinet.com/thread-2076-1-1.html

导读部分
-------------------------------------------------------------------------------------------------------------
C#仿QQ皮肤－实现原理系列文章导航 最新版源码下载

http://www.sufeinet.com/thread-2-1-1.html                                             

       本节开始我们一起来讨论一些简单的系统控件的实现，在这里我列出一些基本的控件 如下图所示，在写文章的同时我会不断的更新控件，和添加新的控件，也都会一一的发上来和大家分享。

   

    Button控件 是一个很常见也是用的比较多的一个控件，其实他的实现正和他的使用一样的简单明了。

在看它的实现 之前我们先来看看CommandButton用户控件的实现吧

    界面

           

  呵呵 主要看代码吧，这上面没有什么东东可看的

我们先来指定一下默认的事件吧

[DefaultEvent("Click")]

其实这个简单只要这么一行就OK了，但记着一定要写在类的上面哦

        private Image _mouseMoveImage = null;
        private Image _mouseDownImage = null;
        private Image _normalImage = null;
        private ToolTip toolTip;
        private System.ComponentModel.IContainer components;
        private string _toolTip;
        private Color imageTransparentColor;

        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.toolTip = new System.Windows.Forms.ToolTip(this.components);
            this.SuspendLayout();
            // 
            // CommandButton
            // 
            this.Name = "CommandButton";
            this.Size = new System.Drawing.Size(150, 45);
            this.ResumeLayout(false);

        }

        public CommandButton()
        {
            //this.SetStyle(ControlStyles.DoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.UserPaint, true);
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.DoubleBuffer, true);
            this.SetStyle(ControlStyles.ResizeRedraw, true);
            this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
            InitializeComponent();
        }

        public Image MouseMoveImage
        {
            get 
            { 
               
                return _mouseMoveImage;
            }
            set
            {
                _mouseMoveImage = value;
            }
        }

        public Image MouseDownImage
        {
            get 
            { 
               
                return _mouseDownImage;
            }
            set
            {
                _mouseDownImage = value;
            }
        }

        public Image NormalImage
        {
            get 
            {
              
                return _normalImage;
            }
            set
            {
                _normalImage = value;
                this.BackgroundImage = _normalImage;
            }
        }

        public Color ImageTransparentColor
        {
            get
            {
                return this.imageTransparentColor;
            }
            set
            {
                this.imageTransparentColor = value;

                Bitmap image = this.BackgroundImage as Bitmap;

                if (((image != null) && (value != Color.Empty)) && !ImageAnimator.CanAnimate(image))
                {
                    try
                    {
                        image.MakeTransparent(this.imageTransparentColor);
                    }
                    catch
                    { }
                }
            }
        }

        //重写一下创建控件的方法
        protected override void OnCreateControl()
        {
            base.OnCreateControl();
            if (this.NormalImage != null)
            {
                this.BackgroundImage = NormalImage;
            }
        }

        //重写进入事件
        protected override void OnMouseEnter(EventArgs e)
        {
            base.OnMouseEnter(e);

            if (this.MouseMoveImage != null)
            {
                this.BackgroundImage = MouseMoveImage;
            }
            this.Invalidate();
        }

        //重写离开可见部分的事件
        protected override void OnMouseLeave(EventArgs e)
        {
            base.OnMouseLeave(e);

            if (this.NormalImage != null)
            {
                this.BackgroundImage = NormalImage;
            }
            this.Invalidate();
        }

        //重写鼠标按下事件
        protected override void OnMouseDown(System.Windows.Forms.MouseEventArgs e)
        {
            base.OnMouseDown(e);

            if (this.MouseDownImage != null)
            {
                this.BackgroundImage = this.MouseDownImage;
            }
        }

        //重写鼠标离开事件
        protected override void OnMouseUp(System.Windows.Forms.MouseEventArgs e)
        {
            base.OnMouseUp(e);

            if (this.NormalImage != null)
            {
                this.BackgroundImage = NormalImage;
            }
        }

        //重写背景修改时的事件
        protected override void OnBackgroundImageChanged(EventArgs e)
        {
            base.OnBackgroundImageChanged(e);

            this.ImageTransparentColor = Color.FromArgb(255, 0, 255);
        }

        public string ToolTip
        {
            get { return _toolTip; }
            set
            {
                _toolTip = value;
                this.toolTip.SetToolTip(this, _toolTip);
            }
        }
    }

在这里我就不多说了，因为代码都很简单，所以很容易看明白，大家看看代码吧。

我们主要来看看Button的控件吧

不用说要先继承一下刚说的用户控件哦

 public class Button : CommandButton

接下来来看一下 InitializeComponent()方法

  private void InitializeComponent()
        {
            this.lblText = new Label();
            this.SuspendLayout();
            // 
            // lblText
            // 
            this.lblText.BackColor = System.Drawing.Color.Transparent;
            this.lblText.Dock = System.Windows.Forms.DockStyle.Fill;
            this.lblText.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.lblText.Location = new System.Drawing.Point(0, 0);
            this.lblText.Name = "lblText";
            this.lblText.Size = new System.Drawing.Size(78, 30);
            this.lblText.TabIndex = 0;
            this.lblText.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            this.lblText.TextChanged += new System.EventHandler(this.lblText_TextChanged);
            this.lblText.MouseLeave += new System.EventHandler(this.lblText_MouseLeave);
            this.lblText.Click += new System.EventHandler(this.lblText_Click);
            this.lblText.MouseUp += new System.Windows.Forms.MouseEventHandler(this.lblText_MouseUp);
            this.lblText.MouseEnter += new System.EventHandler(this.lblText_MouseEnter);
            this.lblText.ForeColor = Shared.FontColor;
            // 
            // Button
            // 
            this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
            this.Controls.Add(this.lblText);
            this.Name = "Button";
            this.Size = new System.Drawing.Size(78, 30);
            this.ResumeLayout(false);

        }

我们让字体同比率的话可以加上这个

        //字体大小
        //protected override void OnResize(EventArgs e)
        //{
        //    base.OnResize(e);
        //    this.Height = this.Width * 30 / 78;
        //}

当然也要处理一下OnSizeChanged(EventArgs e)事件

 //固定比率暂时不需要，如果有需要的话可以取消注释
        //protected override void OnSizeChanged(EventArgs e)
        //{
        //    base.OnSizeChanged(e);

        //    int Rgn = 0, height = 0, width = 0,rgn=0;

        //    height = Height > 40 ? Height - 1 : Height;
        //    width = Width > 110 ? Width - 1 : Width;
        //    rgn = Height > 40 ? 8 : 7;

        //    Rgn = Win32.CreateRoundRectRgn(1, 1, width, height, rgn, rgn);

        //    Win32.SetWindowRgn(this.Handle, Rgn, true);
        //}

其它代码全在这里

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using CRD.Common;

namespace CRD.WinUI.Misc
{
    public class Button : CommandButton
    {
        public Label lblText;
        private DialogResult _dialogResult = DialogResult.None;


      
        public virtual DialogResult DialogResult
        {
            get { return _dialogResult; }
            set { _dialogResult = value; }
        }

        public Button()
            : base()
        {
            //this.SetStyle(ControlStyles.DoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.UserPaint, true);
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.DoubleBuffer, true);
            this.SetStyle(ControlStyles.ResizeRedraw, true);
            this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
            InitializeComponent();
        }

        public void PerformClick()
        {
            this.OnClick(new EventArgs());
        }

        private void InitializeComponent()
        {
            this.lblText = new Label();
            this.SuspendLayout();
            // 
            // lblText
            // 
            this.lblText.BackColor = System.Drawing.Color.Transparent;
            this.lblText.Dock = System.Windows.Forms.DockStyle.Fill;
            this.lblText.Font = new System.Drawing.Font("宋体", 10.5F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(134)));
            this.lblText.Location = new System.Drawing.Point(0, 0);
            this.lblText.Name = "lblText";
            this.lblText.Size = new System.Drawing.Size(78, 30);
            this.lblText.TabIndex = 0;
            this.lblText.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            this.lblText.TextChanged += new System.EventHandler(this.lblText_TextChanged);
            this.lblText.MouseLeave += new System.EventHandler(this.lblText_MouseLeave);
            this.lblText.Click += new System.EventHandler(this.lblText_Click);
            this.lblText.MouseUp += new System.Windows.Forms.MouseEventHandler(this.lblText_MouseUp);
            this.lblText.MouseEnter += new System.EventHandler(this.lblText_MouseEnter);
            this.lblText.ForeColor = Shared.FontColor;
            // 
            // Button
            // 
            this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
            this.Controls.Add(this.lblText);
            this.Name = "Button";
            this.Size = new System.Drawing.Size(78, 30);
            this.ResumeLayout(false);

        }

        //字体大小
        //protected override void OnResize(EventArgs e)
        //{
        //    base.OnResize(e);
        //    this.Height = this.Width * 30 / 78;
        //}

        protected override void OnCreateControl()
        {
            base.OnCreateControl();

            this.NormalImage = Bitmap.FromStream(Shared.AssemblyWinUI.GetManifestResourceStream("CRD.WinUI.Resources.Common.button.btnnomal.bmp"), true, false);
            this.MouseDownImage = Bitmap.FromStream(Shared.AssemblyWinUI.GetManifestResourceStream("CRD.WinUI.Resources.Common.button.btndown.bmp"), true, false);
            this.MouseMoveImage = Bitmap.FromStream(Shared.AssemblyWinUI.GetManifestResourceStream("CRD.WinUI.Resources.Common.button.btnfore.bmp"), true, false);
            
        }

        public void ResetBackGroundImage()
        {
            this.NormalImage = Bitmap.FromStream(Shared.AssemblyWinUI.GetManifestResourceStream("CRD.WinUI.Resources.Common.button.btnnomal.bmp"), true, false);
            this.MouseDownImage = Bitmap.FromStream(Shared.AssemblyWinUI.GetManifestResourceStream("CRD.WinUI.Resources.Common.button.btndown.bmp"), true, false);
            this.MouseMoveImage = Bitmap.FromStream(Shared.AssemblyWinUI.GetManifestResourceStream("CRD.WinUI.Resources.Common.button.btnfore.bmp"), true, false);
        }

        private string _text = string.Empty;

        [Browsable(true)]
        public new string Caption
        {
            get { return _text; }
            set
            {
                _text = value;

                if (lblText.Text != value)
                {
                    lblText.Text = value;
                }
            }
        }

        private void lblText_TextChanged(object sender, EventArgs e)
        {
            this.Text = lblText.Text;
        }

        private void lblText_MouseEnter(object sender, EventArgs e)
        {
            this.OnMouseEnter(e);
        }

        private void lblText_MouseLeave(object sender, EventArgs e)
        {
            this.OnMouseLeave(e);
        }

        private void lblText_MouseUp(object sender, MouseEventArgs e)
        {
            this.OnMouseUp(e);
        }

        private void lblText_Click(object sender, EventArgs e)
        {
            this.PerformClick();
        }

        //固定比率暂时不需要，如果有需要的话可以取消注释
        //protected override void OnSizeChanged(EventArgs e)
        //{
        //    base.OnSizeChanged(e);

        //    int Rgn = 0, height = 0, width = 0,rgn=0;

        //    height = Height > 40 ? Height - 1 : Height;
        //    width = Width > 110 ? Width - 1 : Width;
        //    rgn = Height > 40 ? 8 : 7;

        //    Rgn = Win32.CreateRoundRectRgn(1, 1, width, height, rgn, rgn);

        //    Win32.SetWindowRgn(this.Handle, Rgn, true);
        //}
    }

}